High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable
Abstract Phase-sensitive amplifiers (PSAs) outperform conventional phase-insensitive amplifiers by enhancing signal-to-noise ratio (SNR) through distinct gains for deterministic signal and stochastic noise depending on their phase features. Yet despite this potential, the practical implementation of...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
|
| Series: | Communications Engineering |
| Online Access: | https://doi.org/10.1038/s44172-025-00462-x |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849333541764071424 |
|---|---|
| author | Zhirong Chen Xiaojie Guo Yingyu Chen Yongguang Xiao Jingshun Pan Zhengyong Liu Chao Lu Zhaohui Li |
| author_facet | Zhirong Chen Xiaojie Guo Yingyu Chen Yongguang Xiao Jingshun Pan Zhengyong Liu Chao Lu Zhaohui Li |
| author_sort | Zhirong Chen |
| collection | DOAJ |
| description | Abstract Phase-sensitive amplifiers (PSAs) outperform conventional phase-insensitive amplifiers by enhancing signal-to-noise ratio (SNR) through distinct gains for deterministic signal and stochastic noise depending on their phase features. Yet despite this potential, the practical implementation of PSAs in deployed fiber transmission systems remains under-explored. Here we present the field trial of high-capacity phase-sensitively amplified transmission in a field-deployed optical fiber cable. Same-wavelength bi-directional transmission of wavelength-division-multiplexing signals is utilized to increase the capacity in one fiber core. A wideband PSA based on periodically poled lithium niobate waveguides is demonstrated as a pre-amplifier at the receiver, which both increases the signal power and improves the SNR by mitigating the interference crosstalk primarily caused by Rayleigh backscattering along the fiber. A net transmission capacity of 10.944 Tb·s−1 and a net capacity-distance product of 541.728 Tb·s−1·km are achieved, which exceed the results of prior studies in phase-sensitively amplified transmission. These results confirm the favorable performance of PSA-based pre-amplification for large-capacity optical fiber transmission in real deployment. |
| format | Article |
| id | doaj-art-14be210c0a5d45caa70e5eaedf0812c5 |
| institution | Kabale University |
| issn | 2731-3395 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Engineering |
| spelling | doaj-art-14be210c0a5d45caa70e5eaedf0812c52025-08-20T03:45:49ZengNature PortfolioCommunications Engineering2731-33952025-07-01411710.1038/s44172-025-00462-xHigh-capacity phase-sensitively amplified transmission in a field-deployed fiber cableZhirong Chen0Xiaojie Guo1Yingyu Chen2Yongguang Xiao3Jingshun Pan4Zhengyong Liu5Chao Lu6Zhaohui Li7School of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen UniversityInternational Cooperation Joint Laboratory for Optoelectronic Hybrid Integrated Circuits, Jinan UniversitySchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen UniversitySchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen UniversityGuangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal UniversitySchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen UniversitySchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen UniversitySchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen UniversityAbstract Phase-sensitive amplifiers (PSAs) outperform conventional phase-insensitive amplifiers by enhancing signal-to-noise ratio (SNR) through distinct gains for deterministic signal and stochastic noise depending on their phase features. Yet despite this potential, the practical implementation of PSAs in deployed fiber transmission systems remains under-explored. Here we present the field trial of high-capacity phase-sensitively amplified transmission in a field-deployed optical fiber cable. Same-wavelength bi-directional transmission of wavelength-division-multiplexing signals is utilized to increase the capacity in one fiber core. A wideband PSA based on periodically poled lithium niobate waveguides is demonstrated as a pre-amplifier at the receiver, which both increases the signal power and improves the SNR by mitigating the interference crosstalk primarily caused by Rayleigh backscattering along the fiber. A net transmission capacity of 10.944 Tb·s−1 and a net capacity-distance product of 541.728 Tb·s−1·km are achieved, which exceed the results of prior studies in phase-sensitively amplified transmission. These results confirm the favorable performance of PSA-based pre-amplification for large-capacity optical fiber transmission in real deployment.https://doi.org/10.1038/s44172-025-00462-x |
| spellingShingle | Zhirong Chen Xiaojie Guo Yingyu Chen Yongguang Xiao Jingshun Pan Zhengyong Liu Chao Lu Zhaohui Li High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable Communications Engineering |
| title | High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable |
| title_full | High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable |
| title_fullStr | High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable |
| title_full_unstemmed | High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable |
| title_short | High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable |
| title_sort | high capacity phase sensitively amplified transmission in a field deployed fiber cable |
| url | https://doi.org/10.1038/s44172-025-00462-x |
| work_keys_str_mv | AT zhirongchen highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT xiaojieguo highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT yingyuchen highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT yongguangxiao highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT jingshunpan highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT zhengyongliu highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT chaolu highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable AT zhaohuili highcapacityphasesensitivelyamplifiedtransmissioninafielddeployedfibercable |